Answer this question truthfully
### Question: What causes SIADH?
### Response: The causes of SIADH are many, and because the disease may present with features of electrolyte disturbances, there are many non-associated diseases that present like SIADH. The most common cause of SIADH is ectopic secretion of the antidiuretic hormone (also called arginine vasopressin) by cancer cells. Cancers like lung or bronchogenic cancers, lymphoma (s) in any location, head and neck cancers, sarcoma, and myriad of other cancers can cause SIADH. Other causes of SIADH include: Pulmonary diseases, central nervous system disorders, as well as pharmacotherapy with anticancer drugs like vincristine, cyclophosphamide; opioids like morphin, antiepileptics, and some antidepressants medications.